Depends on what you want. As was mentioned above, Willis is a close walk from the train station. Signature is not convenient to get to, but once you're there, you can walk to tons of shopping if that's something the wife wants to pursue. If you're going to drop the $$ on it, you might as well do Willis. But if you're close to Hancock, you can head up to the Signature Room/Lounge and drop that $20 on a couple of cocktails for a similar enough view. Might be challenging with the Dirty Underwear Gang in tow, though.